There's A Fight Club For Geeks In Silicon Valley. Seriously.

This is actually pretty cool. There's a club in Silicon Valley
where geeks can blow off steam by beating each other up in a
garage -- just like the Fight Club of movie and novel fame.
(TheNextWeb)

"In Silicon Valley we have the highest concentration of
aggressive people in the United States," a member says (has he
been to a trading floor?). They need a place to blow off steam.
The club is a bit nicer than the movie version, but it's still
people beating each other up pretty bad.